Friction draft-rigging.



J. F. OGONNOR. PRmTIoN DRAFT RIGGING.

APPLICATION FILED 0OT.18,11909.

Patented Jan. 17,1911.

2 SHEETS-SHEET 1.

RSX

l WITNBSSES.'

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part of this specification, Figure'l is a plan Azo . section,

. Tuin JOHN F.

STALT, u s

`WILLIA1VE H. MINEFI, 0F CHICAGO., ILLINOIS.

Fiaiciio'iv DRAFT-Eiserne.

To all whom it may concern:

Be itknown that I, JOHN- F. OCormoin'- a citizen of the United States, residing in Chicago, iiil the county of Cook and State of Illinois,l have invented anew and useful Iinfriction draft rigging'for railway cars.

Myvinvention consists in the novel con, struction of parts and devices and in the novel combinations of .parts v,and devices herein shown and described and more particularly specified in the claims.

In the accompanying drawing forming` a view, partly in horizontal section on line l-l of Fig. 2, of a friction vdraft rigging embodying my invention., Fig. 2 is a side ,.elevation, partly in section,"on line 2-2 of Fig. l. Fig.- 3 is a detail perspective view of one of the pressure transferring members. Fig. 4 is a detail perspective view of,l the bearing block. Fig.'5 is a detail perspective view of one of the transversely movable followers.

on lines (ie- 6 of Fig. 2 of the longitudinally movable friction shell and uide box. Fig. Tis a section on line 7-7 o Fig. l., .Fig 8 is a detail section of the friction shell on line 8-8 ofFig. 1. v

In the drawing, A represent the draft sills, center sills or frame members of the r:arto which the 'draft rigging `is applied, A1 kthe front sill, A2 the channel plate connectingA the front and centersills, A3 the carry-iron and A* the buffer block, A5 A5 the .draft lugs or stops secured to' the draft sills and against which the followers or movable members'of the draft rigging abut and A the removable guide or tie-plate secured to the center sills by bolts A7 'and upon which4 the draft rigging is supported and reciproeates. 4

B is the draw-bar or the coupler and B1 a l draft yokesecuied thereto by rivets o in the usual manner.

" C is the front follower, D the lciii itudition shell, preferably three in number, F the wedge, F1 anti-friction rollers between the wedge .and friction shoes, G a movable bearing block against which the friction shoes abut, ii H pressure transferringmei.;

Fig. v6 is a detail' view, partly invbetweenl the wedge F' l Specification of vLetters Patent. Patented Jau, 1'7 1911A,

*Application-filed: Octoberil, 1909. Serial No. 523,252.

bers, K transversely movable followers, L L1 transversely' arranged. springs, M'M inner transversely and longitudinally movable spring seats interposed between the inner ends of the-springs and the followers K, N the outerv spring seats or cap plates and P a longitudinally movable connecting i'od'for the springs. l

The longitudinally movable friction shell and guide box D is exteriorly of a general rectangular shape and fits `between and is guided longitudinally by the draft sills A A, vand also its between the upper and lower members b1 b1 of theV draft yolre B'. It has a central friction portion or shell d, having an internal,A preferably cylindric, friction -face d1 with which tlie external friction faces 'e of the segment-al Vfriction shoes E are in sliding frietional engagement. The longitudinally movable friction shell and guide box D is also provided at its rear portion with longitudinal slots or chambers d2 to receive the connecting rod P and the thimbles or hollow stems m of the inner spring seatstM. rIfhe longitudinally movable friction shell and guide box D is also provided with integral curved guides Z8 d4 for engagement with the curved faces h rl ofthe' pressure transferringblocks or members H .and thus transferring the longitudinal pres sure ofthe drawbar and draft yoke into a' transverse one against the transversely a'r- A ranged springs L and the interposed followers K and inner springl seats M. At its rear end d5 the friction shell and guide box D has right angle faces or should'eis'D1 for engagement with the rear stops or draft lugs A5.

The segmental and longitudinally movable friction shoes E have inner inclined or wedgling faces@1 and should ers e2' for cooperation with the corresponding inclined or wedge faces f and shoulders f1, of the wedge F and interposed anti-friction rollers F1.

The wedge F is preferably pyramidal or three faced, its' faces corresponding in number to the number of the segmental 4friction slioes'E and it is interposed between the front 'follower C and the friction slices E. A 4longitudinal connecting rod F2 extends and the shell and guide boX D, the head f2 of the connecting rod FZ fitting in a sui-tablev recess f3 in the wedge F 'and its threaded nut j lbattling against the transerse 'arieh c tris l vIl() and guide box D. vThisconnecting rod serves to hold the wedge F, friction shoes E, pressure block G, pressure 'transfer blocks H, all assembled in cooperative rela- 1 tion to each other within the friction shell and guide box.

rlhe pressure or bearing block G-has a flat front end face g to bear against, the rear.

end faces e3 of the friction shoes E, and also preferably .a hub or flange g1 fitting within the friction slices E. This bearing block G also has at its rear end curved bearing faces g2l to engage and bear against the curved front ends h2 of the pressure transferring blocks H and thus cause the transfer blocks H and bearing block G to transfer the longitudinal pressure of the draw-bar` and draft yoke into a transverse pressure against the transversely arranged springs L L1, said parts acting in conjunction with the curved guides d3 Z4 ofthe shel'l and guide box D.

The pressure transferring blocks or members 'H are preferably four in number andfit between and are guided bythe curved" 25 guides d Zt of the friction shell and guide box D. The same are preferably of al curved shape, substantially as shown in Fig. 8, and. 'each has a c onvexly curved face h, concave face/iJ and cur-vedface h2 for engagement with the bearingblock G, and'a knuckle or pivot member if 'at its 'rear endfor engagement with the curved pivot socket K1 of the -follower K and flat upper and lower faces.

i* if for engagement with the Webs or shouldersg" of the bearing block Gand K2 of the follower K. A y I 'l The transversely and longitudinally movablefollowcrs K4 are preferably two in number, and are arranged upright Within suit'- able recesses or chambers o?? in the fri .tio'n shell andg-uide boXD, one on each side of the draft yoke, and each has a central hole K" through. which the connecting rod P eXtendsso that the upper and lower transfer blocks or knuckles Hon oneside of the draft yoke niaypr'operly engage the fol' lower K, one block I-I aboveand one below the connecting rod l). The transversely arranged springsli L1- are ordinary coiled springs, the smaller one nesting within the-larger. The innerpair of spring seats or caps M against which vthe inner ends ofthe springs L L1, L L1 bear have"thimbles or sleeves m which surround the connecting rod- P and extend through guide slots'ri in the draft sills A topermit of the necessary longitudinal movementv of' -the rod P .and springs L L1. The outer spring seats or caps M against 'which the outer` ends of the springs bear are securely fixed in position on the. connecting Vrodl P nuts p and keys or 'cotters 721. The transverselyacting and longitudinally movable .sp'riiigs L L and their connecting rod P have' a less longitudinal movement than that of the friction shell and guide box D. The longitudinal slot d2 in the member D 'pro-v vides for this differential longitudinal movement of these parts while the longitudinal slots a in lt-he draft sills AA provide. i

for the longitudinal movement of the springs and their connecting rod and springseats. In operation, in buiilng, the longitudinal movement and pressure of the draw-bar is transferredvby the coperating members G, H, 'D and K intoa transverse pressure against the 'transversely arranged springs -L L1, the friction shell and guide box. D. l being held stationary by the rear stops while v thefriction shoes slide in respect to the friction shell. In pulling, the operation is the same. but the reverse, 'the front follower, wedgeand friction shoes being held station-l ary by the front stops while the friction shell and guide box D move forwardwith the draw-bar and' draft yoke, the A transversely arranged spring and-'connecting rod having also .a diminished forward longitudinal movement. A The guides d3 Z4 andola'd4 .on the friction shell and guide box D are concentric circular curves and may be arranged `to produce any desired proportional transverse move` mentl of thefollowers-K-in respect .to the longitudinal movement of the draw-bar.

This enables mewith a given spring of standard `make or extent-of compression to stunt-ly vincreasing relative spring movement.

This increases the cushioning efficiency of the draft rigging'as a whole, and also pro'- vides for proper cushioning action under,

light or service strains on the draw-bar.

.I claim bination with the draw-bar, raft yoke, draftdugs and draft sills having'longitul l I i I 0 A y 1. In a friction draft rigging, the .com .A

dinal guide slots therein, of a combined longitudinally 'movable friction shell and guide 'box'having 'curved guides for pressure transfer blocks, longitudinally 'movable friction shoes within the friction shell, a Wedge,a bearing block 'engaging the friction shoes and havingv curved bearing faces at its rear end, curved faced pressure transfer blocks engaging said bearing block, transversely 'and loi'igitudinally movable followers `engagingsaid'pressure.transfer blocks, trans- Aversely arranged and acting and longitu-4 dinally movable y springs,

and a connecting rod and seats for said springs, the innerl seats for the springs engaging the followers and having thimbles extending through the slots in said draft sills, substantially as specified.

2. In a friction draft rigging, the combi- "nat-ion with draft sills having longitudinal nally movable friction slots therein, draft lugs secured thereto, draw-bar and dra-ft yoke, of a longitudishell, segmental friction slices and wedge within the shell, trans` versely acting and longitudinally movable' springs, a connecting' rod for said springs extending through said slots in said draft sills, an inner pair of spring seats having thiinbles surrounding said connecting rod and extending through said slots in the draft sills, transversely and longitudinally movable followers engagingv said spring extends, and lpressure transferring means between. the substantially as specified.

3. In a friction draft rigging, the combination with draft sills having longitudinal slots therein, draft lugs secured thereto, draw-bar and draft yoke, of 'a longitudi nally movable friction shell, segmental friction shoes and wedge withinthe shell, transversely acting and longitudinally movable springs, a connecting rod for said springs extending through said slots in said draft sills,an inner pair of spring seats having thimbles surrounding said connecting rod and extending through said slots in the draft sills, transversely and longitudinally movable followers engaging said spring seats and through which said connecting rod eX- tends, a bearing block engaging the friction shoes and pressure transferring blocks between the bearing block and the followers substantially as specified. l

2i. In a friction draft rigging, bination with' draft sills having longitudinal slots therein, draft lugs secured thereto, draw-bar and draft yoke, `of a longitudinally movable friction shell, segmental friction shoes and wedge wit-hin the shell, transversely acting and longitudinally movable springs, a connecting rod for said springs extending through said slots in said draft sills, an inner pair of spring seats having thimbles surrounding said connecting ro i and extending through said slots in the draft sills. transversely and longitudinally movablel followers engaging said spring seats andv through which said connecting rod extends, a bearing block engaging the friction shoes and "pressure transferring blocks be tween the'bearing'blockand the followers,y

said friction shell having curved guides for said pressure transferring blocks, substantially as specified.

5. In a friction draft rigging, the combi!- `friction shoes and followers,

gitiidinally gitudinally for the springs nation with slotted draft sills, of draft lugs secured thereto, a draw-bar and draft yoke, a longitudinally movable friction shell and guide box having curved guides, friction shoes within the friction shell, transversely arrangedl and" longitudinally movable springs, a connecting rod extending through the slots in the draft sills, seatsv for the springs, followers acting against the inner seats of the` springs, a pressure block having a curved rear face and pressure transferring members engaging said bearing blocks at their front ends and said followers at `their rear ends, substantially as specified.

' 6. In a friction draft rigging, the combination with longitudinally arranged and acting friction members comprising a fric@` within the shell,

tion shell and friction shoes of transversely arranged and acting and longitudinally 'movable springs, a connecting rodffor said springs, inner movable seats for the springs and connecting meansv between the friction shoes and said inner seatsv for the springs, substantially as speciiied;

7. In a friction draft rigging, the combinationP with longitudinally arranged and acting vfriction members comprising a friction shell and friction shoes withinthe shell,.

of transversely arranged and acting and longitudinally movable springs, a connecting rod for said. springs, inner movable seats for jthe springs and connectingv means between tlie friction shoes and said inner seats for the springs, said connecting means comprising a plurality of curved pressure transferring blocks, substantially as specified.

8. In alfriction draft rigging, the combination with longitudinally .arranged and acting friction members comprising a friction shell and friction shoes within the shell, of transversely arranged and acting and lonmovable springs, a connecting rod forl said springs, inner movable seats for the springs and connecting means between the friction shoes and said inner seats for the springs, said connecting'means comprising a plurality of curved pressure transferring blocks, and al bearing block having a curved face, substantially as specified.

9.'In4 a friction draft rigging, the combination with longitudinally arranged and acting friction members comprising a fric- Y tion shelland friction shoes within the shell, of transversely arranged and acting and'lonmovable springs, a connecting rod for said springs, inner movable seats tween the friction shoes and said inner seats for the springs, said connectingsmeans comprising a plurality of curved pressure transferring blocks, a bearing block having a curved faee,` and curved guides for said pressure transferring blocks, 'substantially as specified'.

10.*In a friction draft rigging, a longiand connectingmeans bey `'1V-0 fsu l A v v l 1l. In a friction draft rigging, a longi y tudinally movable combined shell and ,-'guidebox having curved guides tfor pressurel transferring blocks, Ain combination' with v.leur-ved pressure transferring 5 'blocksengagmg saidv uides, a longitudi-';

nelly movab e bearing lock engaging'said vpressureftransferring blocks, andtransversely and longitudinally movable followers en# gal-@inv .said -pressure transferring blocks staziitially as specified. -7'

4tudin'ally :movable combined friction shell and guide box havin pressure transferring b ocks, vin combination curved guides for g- EDMUND AncooK'.

'with curved pressure transferring blocks gaging said guides,I a longitudmally movy' able bearing block engaglng said pressure transferring blocks, transversely and longig tudinally movable followers enga ing said pressure .transferrin blocks, an friction shoes .engaging sai bearing block, and

transversely acting and longitudinally mov- I 

